you can try give them a call via 150.they should check over the phone for you and they may have different opinion so they may send you an engineer to check
you can also get a forward path attenuator
http://www.ebay.co.uk/itm/FORWARD-PA...#ht_1587wt_955
and lower them by your self
also if the internet works ok some they belive if working dont touch it...so i guess the mod in VM forum use this opinion