I am in the midle of retrofiting from a flat tappet to a small base circle cam hyro roller for my 289 block and was planning on using the "dogbone" and factory non-linked roller lifters. But when I mock it up in my engine the dogbones get pushed up off the block by about an 1/8 inch when I rotate the cam. Has anyone seen this with a small base circle cam? I thought I wouldn't have to buy the expensive linked lifters and remove my heads to install them. But now I don't know hwat to do. Is there more then one version of a small base circle?