how many of you have done DISA valve repair kit (GAS) vs X8R metallic flap version? Do you guys recommend buying new instead of doing the rebuild kit.

Update:
Pulled the DISA out as to prepare it for Tuesday when the kit arrives. I am lucky I tilted the DISA down as i pulled it out because as soon as i got to the work bench and i turned it around the pin fell out. It took me 20min to get the rubber seal out since it was dry and kept breaking, but also whoever took this out in the past used some sort of gasket maker when reinstalling it. Gasket maker was a pain to clean up as well. i'm just glad i caught it in time.

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2001 BMW X5 3.0 Sold
2008 VW jetta S
2006 Lexus Rx400h