Tank looks nice! And man that sucks on the axle, i pulled mine and it came right out, all i did was pull the cotter pin and spin the nut off and put a block of wood on the end of the axle and two hits and it came right out while spinning it with a screwdriver through the hole in the head of the axle.
As for putting it back on, grease grease grease!! Clean out every hole the axle passes through and grease them, grease the axle too. I got one that was bad, a 185, a while back with a flat front tire that wouldn't hold air but looked good otherwise, it was a bad valve stem that was cracked through. We pounded and pounded and cussed and yelled at it, finally came out. I ran a plumbers brush through the axle hole on both sides and coated everything in grease, then i slid the axle in after greasing that as well, i had a greasy mess but everything went together smooth and should come apart good again if needed. Just clean and lube everything!
Also check your steering bearings for play while you have the whole front end apart, see how much it moves side to side and up and down in the downtube. I think mine might just need fresh grease, its tight and not loose but making squeeky noises when turning.
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1984 Honda ATC200ES "Big Red"
1982 ATC200E "Hondie"
1988 TRX300FW "Project Quad" Still in progress....