Just a maple dowel or any hardwood
The extension system I use is basically the same thing as Cue fits except they are made in the USA buy the guy who designed it
That would allow you to be able to tap a 3/8 16 hole and depending on the distance you can use either the bumper with the long...
I think I would plug the 3/4 in and retap it for an extension bumper
If you do that then I can show you what bumper and extension I would recommend
I studied this extension thing for quite a while
I don't recommend the predator type QR extension for this application
Wow
I spoke with George and David like 20 years ago when they were selling the Harvey Martin package that Alan Gilbert gave the Aronek family
David calls me once in awhile And they were quite the characters
My condolences to the Aronek friends and family