I have had no problems with start up to tell you the truth
i did test that, it did go back and forth, clicking, but it started itself right
one time it didnt rotate at all, i plugged it in, nothing happened for about 2 seconds, then it just started
But cutting this part off the tube wont do any harm. The impellar is completely still inside the tube, so if it shoots forward it will stay in, its not like the whole impellar is exposed, just a tiny bit of the back
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