Well now i understand why the is not mk1a 1/4 scale kits on market. that about 2 inches shorter nose makes things much harder.
specially in spitfire which is known tailheavy plane. and build up elevator is only 130g and rudder 92g. and for laminated surfaces with details this is totally impossible i will try ultra light laminate for controls next. but for sure those will be heavier than build up ones.
CG should be about 7 inch from leading edge in center of wing. in real mk1a it was 29-31% from leading edge, but in models it must be about 26-28%. everything have went well to this point, maybe too 'easy'. i have to use high vacuum laminates in tailcontrols.
its ok to me i need to work more, but feeling bad Teros efforts with heavy controls was real waste of time... hes work for me is priceless.... but for sure these kind of things is sirious delay for production..

i need to take few drinks coz of this, shake my wrists and go back on designing table....

Jukka