Singlespeed & Fixed Gear - Problems with quick release/bolt-on skewers

So I converted my old road bike to a singlspeed (or am attemping to, rather) and the quick release I had on the rear wheel couldn't handle the tension as my wheel kept coming loose and rubbing against the frame. With the advice of some people on Bike Forums I bought some bolt-on skewers but I am still getting the same problem as it seems the bolt on the drive side of the wheel isn't grabbing the frame tightly enough to hold the wheel in place. It seems like the frame in the area could be bent but I don't know if it is. Does anyone have any suggestions as to what might be happening and what solutions might be possible?

Thanks, appreciate it.

Knurled washers!

dammit, i've heard of this before, but can't remember how to correct it. have you tried the search? like i say, this has been discussed before. not sure what you'd search, but it's in there somewhere.

make sure your dropouts are parallel.

Same thing just happened to me (yesterday actually) on my new ss old peugeot. Pressure from downstroke pushed my wheel against the frame. I couldn't tighten the QR enough and it kept happening.

I found a little piece of hardware that had been on the bike that I had put into the midden pile of cables and derailleurs--it was a small piece of steel that had been inserted into the drive side horizontal dropout. It looked like it served to block the axle from slipping further back--to keep the axle pushed up into the middle of the dropout.

I took that and and slid it in front of the axle (now all the way back in the dropouts), which held it firmly in place. I don't know what it's called, but it came off an old Peugeot UO8. I'd think other older bikes would have something like it. Sorry if this is a bizarre or inaccessible solution.

Others suggested to me replacing my Quick Release with a more solid axle so I could crank more on the tightening, or, as I see above, knurled washers. Good luck.