We have only experienced this trip once after an offline water wash. Besides the extended 1 hour+ crank dry you can also open additional low points from the unit. Make sure all of the water wash drains are 100% open especially the lower manway spool piece since the majority of the waterwash effluent will be exiting from there. Whats important is to try not to inject too much soap to avoid additional rinses. This could push water and soap into your combustion cans which a crank will not help to get all of the moisture out. In addition, the moisture will damage the graphite crossfire packing causing hot CDC air leakage around the tubes. Hand clean the IGVs and R0s before washing...you will see the most return in compressor efficiency by keeping your front blades clean. Start up within 24 hours and before closing the generator breaker, hold it at FSNL for 5-10 minutes so moisture will be able to blow out of the 9th and 13th stage extraction into the exhaust path before the bleed valves are closed and evaporate any stagnant effluent. Im not too sure if parking it at warmup "Fire" mode is recommended (1150degs exhaust at only 14.5% speed!), you should ask GE of the consequences when doing so for an extended period of time.