The highest series Jacuzzi would be the 400 or the LX, and their filter lids are drastically different from the 200 and 300. I would say it's impossible for either one of those to come loose and "squeak." As for the 200's and 300's, I would say the squeak is coming down to personal preferences. Not saying it is not legitimate, but saying that very, very few would find it problematic.
Wuzzat, I can assure you that you really have little to be concerned about. Out of the hundreds of 200 and 300 Jacuzzi's we have delivered, this is one complaint I haven't come across. If the filter lid comes out with the jets on, something seriously is not right. It would most likely mean that the clips are broken, which would be under warranty anyway.