Hello Tom
I just got three more flights on the Corsair this weekend and still have a problem of the two bottom cyl. filling up the glo plugs, so after each flight I pull the plugs out and blow the oil out relight them before I put them back in and after putting them back in I get great performance out of the engine , however I am still using the 9 1/2 % oil yet and have a gallon and a half of this fuel left and then I will switch over to the right fuel of 7 1/2%, but the after run oil I am putting in is as you suggested earlier in this thread, and I am still having a smooth feel of the rotation on the bearings so, so far so good, engine is running still pretty strong and am thinking of adjusting the valves soon, but will try your method of the flow through on the after run oil and see if there is any moisture, seems to start even better by hand what a great engine so far.-Steve