Well got a short ride in not a goid one but it runs. I think that stripped head bolt caused a vacum leak I adjust the idle screw either to much or to little and it wanted to accelerate on its own and on a engine like that on a bicycle it was scary. Other than them head bolt hole being bad the crankcase is good and I really dont want to spend $139 on a phantom 85 crankcase so does anybody have any advice on fixing them head studs? If I go up in size what size and use what studs any help would be greatly appreciated. Thanks.