Valve spring cups
I need some direction. I received my new Erson custom grind solid roller cam several weeks ago. I purchased the solid roller cam, lifters, springs, retainers, and keepers all at once. I started lapping in my valves the other night and found another bent valve, making that two that the best machine shop in anchorage didn't find after charging me $250 to measure the cc and check them out (that's another story). The PBM springs I received with my kit are mdl number 3840. It says they are 1.550 on the box but they actually measure out to 1.540. My valve locator cut outs on my head measure 1.615 ( TFS street heads). I cannot find a cup to work with this spring/head combination. Do I #1, cut the pockets larger to accept the cup that works with the spring? Or #2, find smaller springs?