I am using a Raven 3" poly flowmeter with my EZboom.  Yesterday it commenced to read erratically and very high...like 30x actual rate.  It did this once before, the second time I used it, but we disassembled it and cleaned some metal shavings from the magnets and it begin working correctly again, and worked fine for approximately 2000 acres.  Yesterday I disassembled and removed a similar amount of steel shavings from the magnet, however it did not correct the problem this time.  Anyone have anything to offer?  I can think of lots of reasons for it to read low or not read at all, but reading way high sort of has me perplexed.