I have a 97 banshee with a 4+5 stroker, it has pro design cool head with 18 cc domes it currently has 195lbs of compression. Before i put the stroker in i was running 215lbs of compression and it felt like it pulled harder then it does now. Should I up the compression or leave it where it is? If i should up it then where can i find 17cc stroker domes?