I also modded mine a few weeks ago. No regrets here. The flow difference is night and day. Only once did the impeller spin backwards upon start up. I put my hand in front of the pump and it corrected itself. I had two stock 6025s on my 55 and was about to upgrade to the 6045s when I came across this thread. I'm not purplexed about the warranty as this has saved me 200 bucks.
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