luckily (fingers crossed, knock on wood) i havent broken any vacuum line/hose/part yet. actually, i wasnt really doing any work on that side at all the week or so before this happened, but i was noticing changes in my transmission. so i suspect a slight leak/crack was happening and then it finally broke completely. i just checked it out, and it seems to be holding quite well with the glue-up job i did. we will see.
wait you know what....that is about the area the valve cover laid when i did my vavle adjustment. maybe next time...ill remove the valve cover completely...all hoses/linkages and all.

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1980 300D