We are saved by Grace and grace alone. Not works or Grace plus works, not even Grace then works. Salvation is all a work of God in us. The Word "knocks us down" then the Holy Spirit lifts us us. The Holy Spirit has not endwelled us yet. But where the Word is being presented, the Holy Spirit is there. So when the Gospel is properly presented, then the Holy Spirit (kind of like a parent or a coach) says to our us, "come on you can do it, you know its the right thing to do.....". So by faith, (taking the word of God over our own), we receive Christ as our Savior, but some do think their own word has more value than the Word of God (they have no faith), so they do not receive Christ as there Savior. Each [person when they are saved receives a spiritual gift. And I know you all agree with this mostly. (except for maybe PL on when the Holy Spirit endwells the new believer.) But regardless......
Serving God (sanctification) works the same way.....
We read or hear the word. The Holy Spirit encourages us that we can to it even when we feel we cannot. And then we receive the Grace to have God work though us. But God will not work through us if we do not receive that Grace as well. And we do not have the opportunity to receive that Grace if we are not studying the Word. In other words, you cannot take the Word of God over you own if you do not know what the Word of God says.
Some people study the word more than others and have more responsibility to the Grace that has been presented before them by allowing God to work though them. Some Christians never get out of the milk stage. They may be only "taking in" all the time and never giving,... never serving,..... never growing into a mature Christian. Churches are full of people like this. I know the some people might say that these folks may not be saved....., but it is not our job to judge if they are saved or not. We may want to ask them whom they have trusted and go through the Gospel again if (due to confusing teaching) they have begun to put there trust in the wrong place. This will serve to remind them of their salvation. But to tell someone that if they are save they should be doing this or that is JUST WRONG and corrupts the Gospel..... It does not hurt to share the Gospel with saved people, it reminds them of there salvation and brings forth the gratitude necessary to receive the Grace to serve. Sharing the Gospel also reminds me of my own salvation. I try to share it every day. Even if it is to the mirror or my steering wheel.

So, our response to the Grace presented to us to serve God, in no way diminishes (or increases) the Grace that was presented to us for salvation otherwise this is adding to the Grace provided to us for Salvation. Both Graces are a work DONE by God. But we must receive ONE to be saved and ONE to have God work thsough us. But the fact that we received one does not mean we must receive the other.
For example....
Some people have the spiritual gift of mercy. Some do not have that gift at all and they are merciful anyway, but only by the Grace of God. The person who does not have the gift of mercy but is merciful anyway has taken the word of God over their own (faith) and allowed God to work through them to show mercy.
Hopefully this makes sense...... I am still not sure about the idea of mulitple Graces.............
Any thoughts...............