Welcome to TBN, Birddogkc. /forums/images/graemlins/smile.gif It sounds like you've been enjoying that TC33DA if you haven't taken the time to post until you get 50 hours on it. /forums/images/graemlins/cool.gif
I always check oil with the dipstick fully seated unless the instructions say to do differently. In a large fluid reservoir like the TC33DA has for hydraulic fluid, it probably doesn't matter. If the reservoir is for lubrication oil and small (like lawnmower engines) the fluid level is much more critical. On your tractor, I don't think you'd ever see a difference in operation. The same tractor with or without a loader and backhoe has the same sized reservoir despite using a lot more fluid for attachments.