My L3240 was a three cylinder and it had no shake at shut off.
Glad to hear that as I just signed the deal to trade the BX in on a new B2620.On the b2200 I used to have I used an adhesive insulation foam strip on each side where the hood contacts the sides. Stopped most of the noise. My 2012 2620 doesn't make a sound when shutting down....maybe luck?