I am replacing an existing sub panel that has got damaged. This subpanel is being fed from a 40 amp breaker with #8 wire. Once installed the panel I noticed the main lugs were sized from #6-#1. Do they make a lug kit or adapter were I could use a #8 wire. They feel tight in the lugs but I don't want to have issues down the road. The reason I had to use 125amp sub panel is because that's all the supply house stocks. I'm using a GE TLM812RCU sub panel. Thank you