Contact Starcraft. They can provide parts for even the oldest campers they ever made. Their customer service is great. No need to cobble something together from HF.
Actually, you can probably buy just the wheel and the handle.
curmudgeon: noun; a crusty, ill-tempered, irascible, cantankerous old person . . . .
79 27' Holiday Rambler Statesman, 78 32' HR Imperial, 85 36' HR Imperial 5th Wheel