I have an 08 Fire cat love this bow shoots great ..was shooting this morning and noticed top limb was cracked ..I backed both bolts out to take pressure off..They are 2 H ..max at 60 but, I had it at 57 lbs and I am a short draw 26 inch ...So, I don't think I ever over loader them or any thing like that bow is kept in the house..never let it get hot or any thing like that...Thanks, for any help .....