Steam Cleaning Damage

I've just started 2 steam clean. I've noticed that on a couple of the records the vocals were distorted in a couple of areas after steam cleaning them. I've only steamed/vac the record and used micro fiber towels. No other treatments have been used. Could this be grunge or did I damage the record. Using the shark steamer and the distance from the record is 1/2 inch from the record.

Thanks for your help,
EP