If your 108 shakes violently you have a major problem there - maybe a bad flex disc or very off-balance wheels - get that fixed ASAP! As for your engine problem...

It's usually a sign that your hot idle is too rich. Back off the large air speed screw 1/2 turn (counterclockwise) while your engine is running. You'll probably hear the idle speed increase. If that doesnt help it enough, don't back it out too far, but pull the rubber cover off the right side of the ECU and turn that mixture screw about 3-5 clicks counterclockwise while the engine is running to lean it out some more.

It COULD make it worse if it's too lean, but I doubt it. I've never had mine be hard to start with the idle too lean, it's always when it was too rich. If it speeds up when you turn the ECU screw (not the air speed screw) then it's a sign it definetly was too rich.