Hi Oct,
I've been using an old (Pre Gold) Cyborg for ages now. (Well over 2 years) Before you start ripping it apart check this first.
The Cyborg has a single spring for tension and when you move the stick a collar under tension from the spring slides up and down the shaft (Must be a joke in there somewhere)

Compress the spring downwards and spray some polish or similar onto the shaft and "Work it well in". I had what I thought was bad spiking on mine about a year ago which turned out to be caused by the mechanical drag on the shaft. a quick spray of silicon polish every few months gave it a new lease of life.
Cost you nothing give it a try.
Not sure about the spring tension though. That would require a strip down to insert a spacer under the spring.
TTFN
snafu