I'm about to program a part which, due to its length, requires being held in both the main and the sub spindles. A built-in safety feature in the machine will not allow a tool change with the part held in the BW head. Is there any reason I can't park the BW head while the tool change is taking place, then re-acquire the part? Is there a chip blow-off feature that will clean any chips off the part and the collet before re-clamping? Thanks for any help.