strange homing behavior

Im.working on a large 3 axis mill. When.attempting to home the beast, the z axis homes fine. The x and y run in the correct direction to.the home switch, hit it, zero.the dro, then return to their previous postions and the dro zero' s out and the machine thinks it is.at home. If I park the.machine on the home switches, power down and back.up, it will run.the homing sequence and stay in the correct home position. I have no home offset in the ini file and home is set to 0.0. , I.also.do.not have a postion file in.the ini. Any suggestions? I cpuld have missed something, its late.. Thanks.

JR

Ill.try putting a small.offset in. The thing that doesnt add up.is the z axix homes fine ,regardless of where it was last parked. The machine does have resolvers. The other machines I did had encoders, but it shouldnt mattter. I seem to.ger the weird ones.....

is the resolver for that axis working ?
or in correct phase

Resolvers work and count, I can jog the machine anywhere. X&Y will hit the home switches and zero, but then move to where the machine was before start up, Z does not exhibit this behavior. Im a bit stumped. I have had just plain annoyances with errors from both hal and ini files where emc just doesnt like something and I have to delete and completely retype the line, then it worked. It is like there is an offset stored, but there is no offset. Linuxcnc could use a fixture offset table similar to the tool table. Thanks, we will get this...