Current Lover question

[Robusto]

Loved building this, and it actually worked the first time I plugged it in!

Question: as I am adjusting bias, around the mid-point there's a ton of distortion. Is this normal? I have to set the bias trim to 100% to get flange, and it's still kinda noisy. Is there a chip i should try swapping out to see if that makes a difference? I bought my BBD from Small Bear, so should be legit.

If anyone has any tips, let me know.

Thanks!