Hi, we have a new pony, welsh, 10 years, but acts like 4 years, several issues, ie, never been schooled or handled much, ridden too hard too young, separation anxiety, etc, etc. But, is a sweet and lovely boy, with lots of potential. We have had him a couple of months, and already he is a million times better to be handled, gently schooled, trailer trained, etc. So, my problem is, i've noticed when teaching my daughter in the school, that he is putting his tongue over the bit, and snatching the reins down. My daughter is very gentle, very light, only 7 1/2 stone. He has had his back looked at, and is okay. He was given to us with an eggbutt single jointed snaffle. Now, I was thinking of getting a sweet iron double jointed bit with copper lozenge. However, I have read and reread all the info on google and now am thoroughly confused. What bit would anyone recommend? I don't just want to keep using the bit he came with, as that is not neccessarily the one for him.