Unless you physically checked your bellows .inside and out for any small tears ,just looking at them verifies nothing. Have to run your fingers into every crease at the minimum.Zip tie on the end of shift bellows may be good if the bellows itself was loaded up with silicone when initially done , still prefer the correct size hose clamp. Pretty hard in most cases to see water coming in through the driveshaft on I/Os , where you would look for water due to a bad bellows. Sometimes when it running you may see water splashing off the driveshaft ,if your lucky. You also have a raw water hose coming from the outdrive that may be compromised as well.
