What is the level of your BJJ instructor?
How does he choose to never play bottom? do you just pull guard because you feel sorry for him?
He is a brown belt, very good at it, i have a lot of respect for him. He stopped at brown because he came to town and is the only brown belt instructor, he created a good team from scratch. Sometimes BB instructors come to give clinics and they seem to be satisfied at the level of the club.
However i think he drank too much of the Gracies koolaid, he seems to think that judo and wrestling are strength based grappling arts, that you can get out of any position by sheer technique alone and some other things which reflect on the dojo.
When i managed to pass guard they were immediatly on my game, i have a very tight and low top game from years and years of competitive judo a kind of instinctual game that comes from having to be able to pin very well trained men who did not want to be pinned, sure its all about basic control, but it still takes a while to get used.
To make it short, they are not willing to "spaz" and try to make me lose balance or to loosen up a bit the pins, therefore i can float around from pin to pin until i get a comfortable position, they usually just wait until i try a submission to try to get out.
Well one time i simply was floating from pin to pin and i tried an old submission i once saw in a judo book from a position rarely seen which is reverse kesa gatame (the real reverse kesa gatame), and i managed to lock, he praised me and never said much, but he changed his rolling attitude with me afterwards. He always went for top, which i let him have because frankly my bottom game sucks (when compared to my top game).
The problem i think is that he always saw me as the "judo guy" a guy that "uses strength, not technique" and that i win because im too strong or because im too rough with my training partners. All of which is not true, i simply had good top game and never did fast subs i always maintain control of submissions.
The few blackbelts i have rolled with complimented me on my top game and asked me if i trained wrestling before, probably because im also weak vs triangles (hehehehe).