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For Humidity Issues in N Scale ? = Kato's Expansion Track?

Mark Cartwright
 

I am wondering if anyone else has considered or at best tried Kato's 3-4.5" Expansion Track where Humidity might be an issue?
https://www.modeltrainstuff.com/kato-n-20050-3-to-4-1-4-expansion-track-unitrack/
I know that Kato Unitrack can float upon a well planed/finished surface.
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And actually, i had returned to the Hobby for many years before I was even made aware of such expanding track.
Instead...of even tempting to use it.
I have been razor/file cutting other specific needed cuts.
Though a few of these Kato Expansion Pieces showed up in a large-used Tote buy...I for now do not  plan on using them.
WYE?
Well much to my chagrin...i am actually tightening up tolerances all across the board on all  of my N Scale Equipment, from Track to Bridges and the Locomotives in between.
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Here is an example of what I have also witnessed.
http://www.nscale.net/forums/showthread.php?32282-Kato-Adjustable-track
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Instead...I for now believe the expansion in between Kato Unitrack (unsoldered) every few feet should be compensation enough for my environment in Northern California in a well insulated room.
Mark