Can you tell me, Raylonn, the lens? Not all RK mounts have a problem & I thought I'd try & come up with a list of RK's that were OK with the Pentax mount.
Consider:-
I have an XR-M; fantastic camera; & now use a K10D & I have had no trouble with my RK mount lenses. Like you, I was blissfully unaware of any sticking problem but I was obviously lucky. I also have a Tamron 2x Tele that has migrated to the K10D with no problem.
I'm glad you sorted it out.
The picture shows 2 x Tokina 70 - 210. The one on the right was my original which I used on my XR-M & the one on the left is one that arrived yesterday. Both are identical, as you can see. Some manufactureres then may have made identical lenses that would suit either or added ther Ricoh pin later in manufacture.
Anyway, I'm a bit interested to find out exactly what happened & with what manufacturer.
(Oh! The reason for getting the "new" one is because the original (bought new) developed a clouded front lens.)