yorks.ppl
Another possibility is that you'd got the reverse radial set (ie from instead of to or vise-versa). If this was the case then following a fly right indication would only make things worse.
I have never been shown how to use the RNAV so dont normally switch it on but I wonder if this could have been the cause, I tuned the VOR into NAV/comm 1 but perhaps the OBI was still swiched to RNAV is that possible
The only RNAV setups that I've ever used are the KNS80 and KNS81, which are both Nav only receivers. I've never heard of a OBI display having the RNAV function on it - its normally in the receiver. I'd recommend that you get an instructor to show how to check that the RNAV isn't turned on on the receiver, as the consequences of using it without realising the RNAV has been enabled could be embarrassing to say the least.
Here's what they look like:
KNS80
KNS81
Brooklands