Two or three springs ?

[egp8111]

I've just gotten my hanger find KFIV-1200(912ul) back in the air after it had been sitting for 10+ years. I installed a new tail spring from KF using only two of the three springs. I works well but I was wondering if maybe I should put the third spring on it. I've seen people doing it both ways any reason to put the third spring on it ?
Attachment 32507
I plan to change out the Maco tailwheel for a T-3 at some point if for not any other reason than to try and get a little more vis over the nose.
It has the Grove gear and 8in wheels with Nancos.

Thanks
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