I'm a long time lurker who bought a used 48 Metro HP for homeowner use. My dealer has recommended I don't change the transmission grease. I emailed exmark, who reiterated what's in the manual--replace the grease yearly. In earlier LS threads, exmark recommended (and posted a Service Bulletin about) adding a grease zerk, after the transmission warranty expired. So, have you changed your recommendation about the grease zerk? If not, can you provide me a copy of the SB? It's not available on the old thread. I'll only use the mower on a one acre lot. Thanks.