I am trying to unscrew the plastic spa jet from my inground spa, but I am having nothing put problems.

I am trying to plug one of the jets, as the contractor installed it incorrectly and it is limiting the pressure of the jet above it. I purchased the 1 1/2 inch plug and the pool supply store even showed me how to remove it, but it wont budge. I even broke off one of the plastic nubs, when trying to spin it with a screwdriver and hammer.

It was suggested that I try using a pair of plyers and spread them from within the jet, however it does not grip well enough. Any suggestions would be greatly appreciated.

Thanks,
Brian