"_I have a Dellorto PHBG 19mm and a stock head that was milled down 2mm_"
<p> the 19mm and head are not installed what would happen if i did install them?
"_I have a Dellorto PHBG 19mm and a stock head that was milled down 2mm_"
<p> the 19mm and head are not installed what would happen if i did install them?
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