I fly a Sig Rascal 40. Converted to EP too. I always feel that it has bad ground handling.
The tail wheel never stays straight even if the plane rolls straight. Someone suggested that I replace the spring connectors (between rudder and wheel) with music wire , bent in middle like a 'V'. So I did that on one side. Not a big difference still.

I bought my rascal 4 yrs ago. Anyone has this issue?

Tks747