if you are going for a new movement for the 005, keep in mind that cannon pin is an incorrect diameter. if you gt a new cannon, you'll need new hands or have to mod them a little. the movements inside the h builds are the old design 6497 and almost everything is wrong with them. i have come across 4 different ones so far. also some of the dials i have dealt with have been glued on, taped on, and even have the wrong pin positions. this is where they saved money and why their cost is so low. as for the 236, its pretty much a straight swap, but yeah, that datewheel....chaa ching.