@wood4fun
Tricky, Bill !!!
I had never known about the Fancy Click Slimline Pen Kit before !!!
For the benefit of others, I am going to post the assembly instructions for that pen kit which will help to clarify your construction :
You have cleverly combined features of the Groove and the Fancy Click Pen to produce your Modified Groove. . Nicely done, Bill !!
Thanks for posting this innovative design !!!
P.S. . I think you should now take this one step further ... replace the Cross refill with a Parker refill. .
This will require a short refill extender because the Parker is a little bit shorter (about 0.7") than the Cross.
Also, the hole for the refill to protrude from the nib will have to be slightly enlarged for the Parker refill.
The Cross refill needs a hole 0.076" diameter (slightly larger actually), whereas the Parker needs a hole 0.096" diam. (just slightly larger).
Another slight adjustment might be needed to accommodate the spring when the Parker refill is used ... not sure about that.
After that, this idea deserves to have a tutorial in the IAP Resources .....
@Wayne