yeah I think you are right mine is a Bosch.. ive had several people tell me they like my bosch because it can safely be turned up and the timing advanced a few degress on the DT360 / 466 without worry of over-temping the exhaust..
Got mine taken care of before installing the engine. Couple of ways to go about it. Buy or make a tab that is screwed into a hole next to it...or just peen the edge of the hole the KDP is in. That's the route I wet since the screw & tab just seemed to be more two more things that could wind up in the timing gears.
Either way, if you have a model with that issue...it needs to be addressed.