This one has me beaten!

Quick question for those in the know..

got a 535 recently and although it working absolutely perfectly it squeels like a pig when i cast it..

I dont think it spool balance because I "balanced" it four or five times and no change at all...

dont think its the bearings either as it seems smooth enough on the retrieve..

Im usually handy enough when it comes to servicing reels especially penn reels but this has me beaten or maybe 535's are generally quite loud

any ideas?

had the same prob with a 525 supermag. just stopped using it, never makes a sound now.