ut-304r2

Hey guys i have 256kbps mtnl broadband .My modem is UT-304R2 adsl 2+ .I want to forward port 41698 for utorrent .The speeds im getting are atrocious ( just 0.3 kBps) .I've tried opening ports in firewall and it works giving me speeds upto 26 KBps .But after boot up the problem comes back though...