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'76 RD400, I removed the front wheel to install new tire.  I reinstalled the wheel and now the wheel won't spin freely - the brake seems to be holding the disc.  I did not touch the brake while the wheel was off.  I believe the wheel went on correctly and is centered in the fork.  Should I remove the caliper and try to compress the piston?  I've made some sort of rookie mistake.  Thoughts?

My '76 RD400 has been on a bike lift for about six months and this week started to smell like gas.  Before I put it on the lift, I did not drain the carbs but I shut off the fuel petcock and ran it until it died (figuring that mostly emptied the carbs). 

Two questions:
1) Thoughts about what is causing the gas smell--do you think there was enough gas left in the carbs to leak into the engine oil? 
2) What do each of you do before storing a bike for more than a month or so? 

Cheers,

'76 RD400 with stock forks.  The parts manual in the Tech section of this forum says 10, 20 or 30 weight oil in the forks.  I see fork oil on the shelf for different weights (5, 7 and 10).  What weight fork oil do you use?   (This is NOT meant to devolve into a debate about what type of engine oil is best) ;)
Thanks in advance. 

If you have a recommendation for a Dallas TX (or near there) two-stroke mechanic or shop, please PM me.  OR reply here (if that doesn't violate forum rules about posting personal info).  Thanks!

Can I run the BT45s without tubes on a stock 1976 RD400 wheel?  They are tubeless tires, but will they work on stock RD wheels without tubes?  If "yes" then why use tubes - any added benefit? 

I apologize for the simplicity of this question.  I promise I searched the old posts.  I looked at old posts and saw Chuck's recent post with a link to Amazon for tubes to run on the RDs.  I am confused because HVC and Economy Cycle sell tires without tubes, etc.

Thanks in advance.