2017 Bighorn AC leaking into Rv

[bighorn2017]

I have a 2017 Bighorn 3575el with the blizzard NXT units. I am having water leaking into the rv through the duct work at first it only happend when it rained really hard. I have replaced the seal and sealed all bolts going into the rv but now I am having water leaking in the rv again but this time it has not rained at all. can anyone tell me if they have had this problem or what I might be able to do to stop it thank you

 

[richheck]

There is a TSB on those units, my 2017 has to be modified to correct that issue, involved taking covers off, removing foam insulation to get to air chamber, sealing two existing mounting holes and drilling an assortment of additional drain holes. TSB is labeled as 98-01-19 from Heartland

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