660 small needle spring installed under e clip

Bought this quad a month ago, wanted to know if it had been re-jeted. Yep, 6 grooves on needle, 155 main. Strangely enough PO installed the small spring here. From what I gather between Dynojet instructions and my manual it goes above E clip. Heading to Windrock now to check it out. Hoping this cures incredibly weak mid range. Also will be ordering a 150 from Dynojet since I’m running a stock pipe with nozzle and uni. If there’s anything else I should do when I go back in please chime in. Thanks

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