While I don't doubt you can raise the dust so to speak with this method, that is if there is a lot of dust, or tiny abrasive particles, a clean system relatively free from debris should not be compromised doing such.

Your only moving the plunger a small distance beyond, but if there is a ridge formed at where it normally stops, that ridge may do more damage than anything else!

I just ordered a new MBS, there just under $90. It should be here early next week via UPS. BB