Curious how you bodged them onto a Pompino. I've just done the same and while my solution is pretty sturdy, its not the most elegant, consisting of a few cable ties and numerous spacers. On the back I'll probably drill a hole in the guard and fix it using the bolt hole which is fine, but with the front there's such a massive gap from the tyre to the fork I had to use a bit of rolled up inner tube as a spacer (cable tied to the guard) so would like a more elegant solution that doesn't leave a massive gap between tyre and guard at the top.