Just finished putting my 59 TR6 back together and trying to trouble shoot a few things regarding the lubrication system. I seem to have good circulation with the supply and scavenge system, however, when the engine gets warm, i get oil spattering out of the crankcase brather. I though maybe the oil pressure releif valve was not operating causing excessive pressure and causing this. Any thoughts? Also in inspecting my Pressure releif valve, i noticed that some have the indicator button and some dont. Mine has a screw threaded int the end?????