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You are correct you should not have to reprint the nozzle. Based upon the photo you provided, the cooling ducts are mounted too high. The bottom of the cooling duct should be about 0.1mm to 0.13mm above the bed when the nozzle is touching the bed. When I return from my business trip (5/28) I will inspect the design file and adjust as needed. The stock fan (4010 radial) cooling duct is the least recommended of the group, I did it by request, and I have no love for that fan. When you can, I would highly recommend that you upgrade to a 5015 fan.