Well speaking as someone who has run a Pro Tree my entire racing career things have changed.

The old filament bulb where different. You looked at the tree totally different. .040 lights were considered awesome. The guys like Alderman and Allen Johnson could sometimes do even better than awesome. They were accused of being up to something more than once. They were even accused of taking a shot at the tree.

NHRA switched to LED trees. All of a sudden even Top Fuel Dragster and funny car were able to seem respectful on the tree. The Pro Stockers were .00 the tree. Guys like Allen Johnson were screwed because he had many red light starts after that. I know several times they have adjusted the clutch linkage to try and slow Allen down. This is what happens when things get changed to help a chosen few.

Personally the LED done nothing to help me guess it is what I was seeing in the old filament bulbs.

Leon