BigMal: Thanks for all the replies.
Yup I agree a master filter would be the best option just strange how the connection has deteriorated over the last few years. I see Snap will install a master splitter for $400 if I sign up for VDSL2 - is that a reasonable price or would a sparky be cheaper?
plambrechtsen I have sent you an email to your telecom address - thanks for your help.
I think that $400 is a bit much...well for me at least. You ISP can probably do it for $150 perhaps ask them?
Also coffeebaron does splitter installs, I'm getting mine done via him sometime this week :) (lots of people have recommended him in this forum). He told me the splitter he installs also has VDSL2 in case in the future you wanted to go that route.