Just looked at one of my chinese retail YT Prestige MP's vs my prostock frame, the channel extends further than the retail stick exactly as pictured by aimr75.
The cap grommet on my 2 sticks is flush with the area, the channel is not visible at the end of the cap grommet as it is in aimr75's pics.
I believe "MG" refers to microgel prestige MP in his post btw.
Head YT Prestige MP(2) iPrestige MP(3)iRadical MP(4)tiRadical MP(PT630)paintjob
MG Radical MP,PS 85(2) Max 200G(3)PDR + many more in hiding