I am trying to put my new valves in, in replace of old bent ones. The spring compressors i have however are not fitting on the H23A1 Head the valves lean out and leave very little space to compress the springs. I have the c clamp style compressor ive gotten about 7 of the 16 valves in with this however it took me about a week to do that. "http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4533836208&catego ry=35625" and that one too i got at a local car parts store. Does anyone have any ideas of one that will fit the head on the H23A lude.? thanks