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Went to the music store yesterday and got a few packs of acoustic strings. I was in the process of changing my strings and put the low E string on and was tightening the string and the bridge pin kept slipping out and the string would detune. So I pushed the bridge pin back in and tightened the string again and the bridge pin popped out again and again. I couldn't remember what gauge of strings were on the guitar before because its been so long since I put strings on it, so not thinking, I got some heavier gauge strings. I also noticed that the low E string was to thick at the end to fit the string into the groove of the bridge pin (just on the low E string). I'm wondering what the deal is. Could the string gauge I'm installing be to much for the guitar? Do I need new bridge pins? Perhaps new bridge pins with a bigger groove dow the side of the bridge pin? The guitar is an older Hohner model so I've also considered perhaps maybe its just so old that the bridge pin slots are stripped out or something?.... any thoughts? I'm just trying to make this acoustic playable til I can purchase another.

I would also like to add that all 4 strings I tried to put on would pull the bridge pins up and cause the guitar to detune. The acoustic I'm trying to restring is actually a 12 string but I had made it into a 6 string. Once I took off the old strings though and tried to install the newer ones the bridge pins just won't stay in. This is the first time I've ever had trouble with the bridge pins staying in ...

i usually put a lot of downward pressure on the bridge pin and let someone else wind the tuner....usually theres tension that will make the pin stay down in.....but usually that doesnt happen at all.....so i dont know what to tell ya