Bmg type extruder remix

this is a remix of
https://www.thingiverse.com/thing:4655132

Donation
https://www.paypal.com/donate?hosted_button_id=9EL8CEDVY28DA

Bmg kit
https://fr.aliexpress.com/item/4000021186440.html?spm=a2g0o.productlist.0.0.2c0719a8gw92AJ&algo_pvid=7ba5dbf4-236a-4aed-b335-77137a7bc83a&algo_expid=7ba5dbf4-236a-4aed-b335-77137a7bc83a-12&btsid=0bb47a1916221416366351803e8aef&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

connecteur pneumatique en laiton
https://fr.aliexpress.com/item/4001320746740.html?spm=a2g0o.productlist.0.0.541a4925ATLloV&algo_pvid=06981175-2f70-439e-bf67-de5354a7970a&algo_expid=06981175-2f70-439e-bf67-de5354a7970a-21&btsid=0b86d80216224067482605782ea1fe&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

improved z-axis clearence
happy printing