mxz600

First, speedo is fine around town, but out on the highway, over 50 mph,
it starts to jump all over. From 20 to 80 back down, then it will
quit all together.

Second question, how do you pull the dash apart to get the gauges
out? Need to replace a bulb back there. I took out the 2 screws, is
the rest of the panel around the gauges just clipped in?

Any help on the above is greatly appreciated.

Thanks,
Jay