I would like to know how hard it would be to replace the seals on the jets in a Cal spa classic vip model from 1993.I can't seem to figure out how to post pic.It is the jet type that you can move around in circles.We just bought the spa used and the spa has not been used for several yrs, so the seals seem to be dry looking and one came apart. I am new to spas and any info would help!