Kathy, could you post a photo so we can see what they look like? More curiosity than anything else but it may spark a suggestion.
The way I trim them is with a Dremel tool, using one of those discs you use to cut metal. I wrap them in a large towel around the wings, lay him down, and hold onto his feet. Wrapping him like that seems to really calm him down.
The spur has a quick. If you cut into the quick he will bleed. Usually they don't bleed much but it's a good idea to have a handful of flour or cornstarch handy to toss on to control bleeding. I've cut the quick before and the rooster did not even flinch, but I try to avoid that. I think the speed of the Dremel cutting wheel heats up enough that it may cauterize the wound, thus limiting bleeding.
It's hard to tell exactly where the quick is, it can vary some from one rooster to another. Usually, if I take off less than 25% of the spur length I miss it.
When I finish I just toss him back in the run with his hens, no medical treatment required. He typically mates with a hen to show it is still his flock and things are back to normal.