i have to agree with you bassfisher, fox engs. are those love or hate engs. if your a ture blue eng. man you will uselly lov them if you have a hard time with engs. your prob. hate them. once dialed in they are great. mr. fox did his own thing and 1 minded approach to eng design and developement. the most probematic ones i had are the early .74s i have, went thru some teething probs w/those but i think i got them dialed in. latest head buttons, perry carbs. and os a5 plugs.