Thanks for all the info Ken!
Took the target head completely apart over the weekend and cleaned everything as suggested and removed all broken tips.
Long and tedious task! The lighter fluid worked great! Removed and wiped down every segment too.
The head only had 2 of the 8 screws holding it together, so those were replaced.
In the condition it was in, I am surprised it worked before at all!
Everything is now WORKING as it should on the bench!
Thank you! Thank you! Thank you!
Just have to reassemble and we should be golden!