You're using OHC/PFW on med to soft clear? Something doesn't sound like it's matching up there. However, if it is more along the lines of medium hardness then following up with FPII/White would be your best bet. If it's really soft paint, then PO85rd/White would fit the bill. It will vary from case to case. Try starting out with PO85rd/White and if it's not cleaning it up well enough, go for the FPII/IP/White.