Hi Andy. Here's the pic of the spacer you asked for. Its rubber packing for a sink faucet. I took off the two bottom bolts, loosed the top two, and slipped them in.
You'll have to readjust the shift linkage. The easiest is to rotate the shift lever at the rear of the linkage clockwise by one spline, and fine tune the linkage from there.
I also added some plastic washers to the bolts underneith to take the wiggling out of the boards. I hated that.
