Michael,
It isn't hard. I removed the automatic functions since I never used the auto start anyway and the used springs to tension the original start switch.
Adding a nine inch arm is easy. It's an afternoons work at best. I use mine every day for well over a decade now.
The 1219/1229 can be made into an incredibly good turntable.
Email me and I will send you shots of mine and help anyway I can.
I recommend you lube the motor while you have the table apart. I would also clean and grease the platter bearing and race.
Email me at n at normansizemore dot com
N.