driveshaft query for 900 t16s

[harry kular]

Hello,

I've been getting a 'wobble' when accelerating around 50mph on my t16s. My specialist says that I can swap over the inner drives to cancel the imbalance out- has anyone experienced this?

I'm inclined to just replace the pair- in for a penny, in for a pound- can anyone advise where I can get them?

Thanks in advance