We use a smaller, more advanced microprocessor, and the timing crystal is fully temperature-compensated, so, as long as you stay between -40 and +85 degrees C., there is no need to adjust anything...that is programmed into the processor. And, I think my soldering technique is better...
Very good work. I don't own a Pulsar led but whenever I look for a module in the future I know where to look. Persons like you make keep those vintage leds tick, thanks