RE: Oil type
Alasdair,
The only stickyness is if you use cheap 2 stroke oils. TCW3 spec quality oils no problem.
Attached follows a couple of photo's of some of the Jets powered by my MW54.
Just noticed date on Reaper photo taken week before maiden flight. 28th July 2002. So thats nearly 7 years and 100's of flights with no issues.
I still use the Reaper at my local club most weekends, she is a flying test bed for all my new electronic projects,smoke systems,on board cameras, new 2.4 radio, etc,etc.
Only had front bearing change (FOD Damage) & rebalance after losing the Vampire (in photo) on maiden flight. Cause unknown.
Powered Reaper,Vampire,F15 & Provost.
All the best,
John C