hi everyone Got a cb-6ks with a ksd fitted (the smallest one) getting massive bulging out of the side vent holes (almost look like blisters before I excruciatingly push them back in with a cotton stick, tempted to get a cheap metal device friends m Amazon /dhgate- kamiti , unsure on sizing I know hen flaccid I'm not filling the cb6ks but unsure wether the 1.5" is too small or not , I know it's a hard one to answer so I was after some advice from the more experienced
Measure from the base of your shaft where it meets the scrotum to the tip of the penis. Measure several times (While flaccid of course) That is how to determine the correct length of cage. Your bulging problem is common. Covering or filling in the holes is one way to fix the problem. Another option is to get a metal cage. Metal cages are usually easier to clean and don't have the odor problems.
The holes on the end of my cheap Rikers device sometimes irritate me. A piece of clear packing tape over the holes work for a temporary solution, I'm sure that would also help on the shaft slits on the 6ks.. Try silicone or super glue to close the holes permanently.