Wonky glasses?!

Hi all, I've recently noticed that one of my pairs of glasses has developed a very wonky right arm and another has developed a slightly wonky right arm. I think this is down to the slight pressure of the case on that arm over the space of a couple of years. Since both are out of warranty by about a year but were expensive and nice enough for me to want to sort out, I just wanted to ask -

1) Do all glasses develop this problem to some extent? I find it interesting that both of the pairs of mine which have it are half-rimmed, whereas the two pairs which don't have it are both full frames. (And before anybody says that I have too many pairs of glasses, they're all different prescriptions because I stocked up on Specsavers 2 for 1 deals while I was still young enough to qualify for NHS vouchers, with a view to changing the lenses periodically.)

2) Do you have any recommendations for sorting them out (either myself, or by taking them somewhere)? The most wonky pair has plastic arms, so I was thinking of heating them over the steam of a kettle and then just bending... The other I will probably live with as it's less obvious and they're more fragile. I've been thinking of going back to Specsavers but since they're far outside of warranty I doubt they'll do much!

Thanks in advance

When I took mine into Specsavers the guy was fine and did it without even asking me how long I'd had them or anything (I have half rims as well). Try that before DIY!

Mine always get really wonky, and I have no idea how.

I just take them to specsavers and they do one the spot, without questions and for free I didnt even get them from there :P

This always happens to me! I would definitely say change the case if you think that's the cause. Also, they don't need replacing, you can just take them to be adjusted; even if they are outside of warranty, Specsavers could do a quick adjustement there and then... no harm in trying, right?

Don't do the kettle thing please! You'll probably make it worse If all else fails, where one of your other pairs.

That's pretty nice of them, good to know! Did you happen to see what they actually did to fix them, by the way? I'm really curious now, I've been fiddling with mine for over a week and can't make even the slightest change to them (for better or worse)!

Oh wonderful, thank you! Was it a Coventry Specsavers (based on your current location)? I just ask because I'll be passing through Cov this Saturday on my way home and could stop off on the way if the staff there are likely to be helpful .