I am using synthetic oil, Changing it to conventional tomorrow.
I am running a 19 pitch bravo 1 LT and turning 5800 RPMS at WOT.
l have made some 15-20 mile runs at 3/4 to full throttle but with synthetic oil.
May need to put the 3 blade SWS prop back on to get up around 5900-6000 RPM.