To avoid risking cracking your horn, you really need to follow Jim Dunlop's installation instructions, which are:Hey guys, never posted in this thread before but I need some advice. I just ordered a set of Dunlop Straplocks and was bummed to find they don’t fit on my Dingwall. The screw is too long and won’t go in all the way, I tried using the screw that was in the bass but the head of the screw is too big to pass through the opening on the Straplock. Does anyone here know of a straplock brand that fits on Dingwalls. Extremely agitated about this, never had an issue with any strap lock system on any bass before this.
1. Secure body of instrument to a flat surface such as a table or workbench and remove existing strap buttons. If neck is bolted on,remove it for easier access.
2. With a 7/64ʺ bit, drill 7/8” deep into existing strap button hole.
3. Place strap button over hole. Lubricate tip of mounting screw with a small amount of wax or bar soap and screw it into the strap button hole with a #2 Phillips screwdriver.
4. Rotate clockwise until snug.
5. Repeat for other Straplok button.

