[TowerTalk] galvanic corrosion question

["Ken M" <cassrvp@telus.net>]

I'm looking at possibly buying an older (20 years) Heights aluminum crank up 
and I noticed that the end of each section is capped with a steel bracket 
with the pulley, guides etc built in. I'm concerned about the possibility of 
galvanic corrosion between the dissimilar metals.  Is this concern 
warranted? Has anyone seen construction like this?
Thanx 

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