i just received my shipment of the penimaster pro today, and words cannot express how disappointed I already am in this product. There does not seem to be any way to attach the vacuum head to my glans, and the dvd instructions provide no assistance. My penis is average size, I am using the blue sluice and there is no way I can fit the head of my penis inside this small opening without basically mashing it inside and hoping to attach the vacuum shaped head part afterwards. Is this a common problem? There does not seem to be any way for me to attach this device.