I don't wear spurs or anything, and his saddle doesnt slip, iv had people check it but its okay. I do tend to tighten the reins now as I am scared he will bolt so I do tighten them, I have been trying to loosen up lately with the reins but he just takes advantage and bolts... I have been refusing to jump higher or when I can tell he's not in a good mood, I can tell something is wrong with him and I just don't know what, it hurts me to know that something is up with him, iv tried telling my instructor but she just tells me he's fine and to carry on, this is when I start to refusse and I just go cool him down, also the girl I ride with loves jumping high and so do I but I know she would be annoyed if I start his jumping training again and my riding instructor probably wont let me... like I said he isnt mine and his owners don't really like me very much as it is, im worried if I do try and take charge they will stop me riding him :'( so im kind of stuck thank you everyone for the advice!! It means a lot!!