Shimano Dura Ace 9000 Lever Reach Sheared Plastic Adjustment Screw Modification

Did any of you manage to do what I did, i.e. shear the head of the plastic lever reach adjusting screw? The good news is it's easily fixed for a few pence. I ordered some M4 x 10mm Stainless Steel Grub Screws from ebay. Getting the old screw out may be a bit of a challenge but it is do-able. On one lever I had to use (with care) a small drill bit. Although the original screw is plastic it screws into a metal sleeve. The grub screws are perfect for the job. In the absence of having any Loctite I used a tiny dab of clear varnish to stop the screw from moving. Paint or maybe a non hardening glue such as evo stik should work fine. It's unlikely it would screw/unscrew on its own anyway. Good luck!