Also Wittern has very good customer service if the above does not work give'em a call
I have several machines like that. Try removing the cover over the top of the motors and lift the motor, coil in question and hold the motor up higher than center, then incert the coil into the motor assy then drop motor back into the tray and secure the top cover.
I use all usi equipment, the supervendor made for lance and it is built like a tank and has all the electronic functions you could ever dream off. So I think you should reconsider usi as a valid equipment mfg.
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