Greetings guys from a mild and sunny Charente in S.W.France.

Went to the field yesterday , late afternoon, no wind ....paradise. Took my ' mod'd Twister ' which has an OS35 FP beautifully modified by Tom Dixon. I was using a plastic tank , plumbed for uniflow and fuel with 24% lube' and my usual flying prop' , a Master 10x6.
The FP started as usual , and settled down to it's normal flying setting.

So , first flight , all just fine as usual. Came down without a hitch [ which is a big bonus for me ! ] and let her cool off while my pal and I sorted out the world's financial crisis !

Next run ....Odd ... started her up 2nd or 3rd flick [ all Tom's engines start on the button ] but I had to wind the needle in almost half a turn to get the same revs on the tach' , just on the 4/2 break.

Now I'm a re-tread , only coming back to C/L Stunt a few years back after a long working 'sabbatical' so I would appreciate any of your views.

Probably I'm missing the blatantly obvious , so if I am ....apologies.

Once again , thanks and a great forum fellas.

Kind regards from an ex-pat retired Brit in the Charente - full of ex-pat retired Brits !

Robin.

James , very much obliged for your comments. Like I said ,the answer is pretty obvious , but not to me sadly !!

Regards ,

Robin.

Or chunks of old truffles flushed through?  Steve

I can offer one more possibility, Robin. I once had the solder on the needle to the ratchet break, so the knob spun without moving the needle. I know you said the needle eventually screwed in enough, but it's something to check . . .