Hi everyone, this is my first post in the forum and hope I could get the help I couldn't get from any arguably bmw expert garage here in London.... First of all, the things I modified to the bike: ALTERNATOR DIODE BOARD ( Heavy Duty ) ( EnDuraLast ) Upgrade Ignition trigger unit with electronic advance Mikuni VM34 Carbs Pod Air Filters motogadget m.unit Last time it did it was today after I left the garage, timing done, new sparks, valves clearance checked, etc, the bike was running as never before and suddenly before getting home (15' later I started it, 60ish C degrees in the engine, not warm enough), carb slipped again... So, the thing is when the engine didn't quite reach the operational temperature (ie. 100 degrees or so), sometimes, it does some kind of combustion explosion (don't know how to call it) and pushes off a carb (is always one, not both together), out of the cylinder head's sleeve. At first I thought it was because of the pod filters and the weight on the rubber grommets that connect the carbs to the cylinders, that they were not strong enough to hold the carbs, but it's so erratic that I honestly don't know what could be the issue. Any help, comment or suggestion more than welcome! Thanks!