Stitch tension issues with Alpaca/Silk blend – Rowing out in Stockinette?

[Shinra]

I’m currently working on a seamless top-down raglan sweater using a lovely heavy fingering-weight alpaca and silk blend, and I've run into a frustrating issue. I am using 3.5 mm stainless steel circular needles.

When looking at my stockinette sections in daylight, the texture looks quite uneven and almost striped. It seems like my purl rows are consistently looser than my knit rows, creating a distinct "laddering" or "rowing out" effect throughout the fabric.
sarkari result
I’ve tried a few things to fix it, but nothing seems to completely smooth it out:

Swapped from metal needles to wooden ones to see if the grip would help, but the issue persists.

Tried consciously tugging the yarn tighter on my purl rows, but it makes my hands cramp and the tension still looks inconsistent.

Since alpaca and silk both lack the natural elasticity and "bounce" of traditional wool, I’m wondering if the fiber blend is just incredibly unforgiving to minor tension variations?

Has anyone else struggled with rowing out when using slippery or inelastic yarn blends? Would dropping down a needle size specifically for the purl rows (using interchangeable needles) be a viable fix, or is there a better technique to train my muscle memory?

[PaulAuerbach60984]

Bei Alpaka-Seide-Mischungen passiert das oft wegen der geringen Elastizität der Fasern. Alpaka ist recht rutschig und Seide sorgt nicht für mehr Spannung, daher variiert die Spannung beim Rechts- und Linksstricken. Du kannst ein griffigeres Garn oder Nadeln mit mehr Haftung probieren, aber oft hilft es, die Fadenführung zu überdenken und bei linken Maschen flüssiger zu arbeiten. Manche finden, dass Continentalstricken die Gleichmäßigkeit verbessert. Auch kleinere Nadeln bei den linken Reihen zu nehmen, ist oft effektiver als mit den Händen zu kämpfen und beugt Krämpfen vor.