I removed all the Monocote from the fuselage when I lengthened/laminated the doublers, recovered in red tissue (matches quite well) then Satin clear sprayed, light sanding after ea. 3 coats, 12 coats Satin altogether. I think it makes a nice contrast to the shine everywhere else.
Wing/tail feathers original Mono.
I forgot to mention also installing alum tubing thru the (VERY carefully enlarged in 3 drill steps by hand - not much meat there) engine mount holes to prevent collapse of the (soft) hardwood engine bearers.
Being old and "old school", I won't say I'm proud of an ARF, but I'm sure pleased with it.
Mostly, no emotional attachment - a definite plus for a retread.