I'm trying to get into developing my own negatives, so I picked up a few Patterson tanks on ebay, but I need a few parts to complete the kit..

I did some googling last night to try to find spare parts a la carte, but couldn't really come up with anything, so I'm hoping someone here might have some of this stuff lying around

2x Caps
Agitator? I keep reading that inversion is the way to go, but I wouldn't mind having atleast one of these - are there different lengths of agitators?
1xSpring collar
3 auto-load rollers

Chemistry?

Other stuff like clips & film squeegees might not be a bad idea, either. I'm planning to do 35mm & 120 B&W development to start with, so if I need anything else, please feel free to pitch it to me! I haven't done anything like this since high school, but I do have a chemistry degree, so I'm not terrified of the process.

also, I'm a new user here, but I have some FM & eBay cred to alleviate any concerns. I prefer paypal and know my address is confirmed.

Thanks!