Mike, I had to get a longer screw. I think it is 1.5 inches and I counter sunk it into the wood a touch.
If you are making a forend, one thing that I found really helped was I placed the forend on the gun and used layers of electrical tape that were cut into 1/2 inch squares to float the barrel and position it in it's ideal spot. I then bedded the barrel with Permapoxy putty using my spacers to maintain position and proper floating. Once all this was done, I attached the spacer and shimmed it square. This way, the spacer was placed onto an already positioned and bedded barrel and attached where it best fit to allow a firm and straight connection. Saved me trying to lign it up later. I did have to shim it slightly to ensure it was snug but that was easy since it was already aligned etc...
Hope this helps.
feel free to ask any questions. The only answer I will have is what seemed to work from me. The real Handi Geniuses are the other guys on this forum.
cheers
DR