Livorsi gps speedo with odometer
 

I recently purchased 2 livorsi gps speedos/with trip odometers,great unit ,but 1 customer is saying that since install 4 weeks ago,every time he pulls out of dock and sun hits lens it totally fogs up when sun hits it and takes about 20-30 minutes to clear up.im concerned that lens will start getting dirty on the in side permently,has anyone else encountered this issue/thanks wes