George, Thanks for additional details! Other sources also tell me also the 100T and 90T are similar. Also learned a lot about pressure, pumps etc. from other web sites etc. I will not go to pump or regulator yet! KISS, right!
I have added pressure from the crank (as was intended with the 100T - and probably 90T) and the 90T now runs great thru a full tank (on ground). Will take her out tomorrow for flight. I suspect all will be better now. It is now really easy to adjust with tackometer - not at all sensitive - no leaning when nose up, ETC.

Dennis