Location [Q] Galaxy S II SHW-M250K to GT-I9100 problems

So recently I converted my SHW-M250k into Gt-I9100. I used odin to flash it with the I9100 Pit and I9100 Firmware.
I followed this procedure : http[colon]//dabinslab[/url][dot]blogspot[dot]ca/2013/03/turn-shw-250sk-to-gt-i9100[dot]html?m=1

It worked but I have few problems:

1. I live in Canada and I'm with Fido. My Messaging does not work. It won't sent text.
2. Service connection problems. Often I have really low connection or no service. I would be using it with full service but suddenly drops to none.
3. Data REALLY slow, its very slow, My other phone has no problems.
4. Data stays on for few minutes even though I turned it off.

I have a fido 3g SIM and It had no problems on my old phone. I set the APN up already.

Please help me with at least one.
Thank you.