Tuning up my kit.

I plan to work on some of my cameras&lenses during the cold winter months. I've purchased a nice spanner set from S.K.Grimes,2 light seal kits from Jon Goodman and various sundry tools on-line and in my area.
Does anyone know of a web site(s) that deal with specific equipment like pentax lenses, Nikkromat bodies etc.? I've been pounding keys for 3 days and haven't really found anything.

Thanks Much
Mike

A few Pentax camera repair manuals on line.

Dead Link Removed

I wonder if the guys on the Nikon users group forum might have something.

Great Pentax link Nick. Thanks.