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2 ring piston instead of stock 3 ring. (Opinions wanted) SMR510

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I'm in the process of building from the crankshaft up and read gains should be seen from less drag with one less ring on the piston. Also a plus I believe, the TE or forged race piston is lighter. I'm looking at the Wossner kit part number 8866DB and it's on backorder so before I wait weeks for this 2 ring aftermarket race piston I want to get the communities prospective. This bike is not being raced, but being ridden like it if that helps. I am installing a new part from 09-10' with the sight bubble for seeing where the oil level is since I only have a check screw on my 06 and it's stripped.. The only negative thing I have read is that you have more oil escaping into the combustion chamber so I'm guessing topping off may be necessary. Any other Pros that I'm not seeing? Cons?  Thanks in advance for any thoughts

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One of the guys on here commented on 2 ring vs 3 ring pistons. Supposedly the KTMs have considerably higher oil pressure then the Japanese models so 2 ring piston isn't advised. I'll see if I can find the tread for the exact wording...

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3 ring longer life, slightly less performance. 2 ring slightly better performance shorter life. What is better for you ? Do you plan on rebuilding the motor occasionally ?

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