Haven't done an LP carve top, but have installed the push-push pots from Warmoth with out issues/modification on:
1.) Rear routed Strat
2.) Tele rear routed with LP control routes
3.) Carved top VIP
4.) Flat top VW
You MIGHT see an issue with SOME knobs. If you are using metal Tele type knobs with a set screw they may not work if you try to mount the knob all the way down on the shaft, but if you pull it up from that position just slightly before you tighten the set screw it will work.