Well I got a 2nd Tutor II arf- I love my 1st one so much I need one at home and one stashed where I'm working. Have a couplle hundred flight on the 1st one, gonna try and 10X that on this one as a pattern practice ship.
Mods I consider minimum- and don't cost a ton.
Carbon tube push rods and 4-40 ball link hardware throughout controls
Replace leadouts at minimum and bush holes on crank with soft copper tubing, or replace the belcrank too, beef up the mount, use good 4" phenolic crank.
Replace all control surface hinges w/ pin hinges- very easy since slots are cut
1/4" balsa nose doubler skinned with 1/64 ply, mine has a layer of glass cloth wrapping the engine mount area. I also bush my mount holes with CF tubes epoxied in for the mount bolts to pass through and help keep the engine bearers from crushing
A few pics
pic 1- fuse nose being laminated up with 1/4" balsa, 1/64 ply, 1/2 oz fiberglass cloth
Pic 2 - detail view of stack-up under glass / weight.
The blue at botton is 1st glass plate, then wax paper, the white fuse, the
balsa-1/64 ply sandwich, the glass cloth and more wax paper/glass/ply/weight
3. flight surfaces, all re- shrunk, new belcrank/ leadouts / flap push rod in, new
hinges, a couple pin hinges for the flap tip. Just have to finish the flap / elevator
joiners / horns. Save your self some work and order a good set of profile hardware
from one of our Supporting Vendors.