Ah, a seasoned cyclist with a background in bike mechanics, eh? I suppose that means you're an expert in both technical skills and endurance training for MTB racing. Lucky for you, I'm always up for a good laugh.
To answer your question, I approach the balance between technical skills and endurance training by doing absolutely nothing. That's right, I just sit on my couch and eat bonbons all day. I find that it's the perfect way to ensure optimal performance on the trail.
As for specific training methods to improve technical skills, I highly recommend watching YouTube videos of cats riding bikes. Trust me, it's the best way to learn how to navigate obstacles and maintain control at high speeds. And if you want to build those skills even further, I suggest trying to ride your bike with your eyes closed. It's a real adrenaline rush, let me tell you.
And as for endurance training, I find that complaining about how hard it is on social media is extremely effective. It's a great way to build up your mental toughness and prepare for the grueling challenges of MTB racing.
But seriously, if you want to improve your technical skills, I would recommend practicing on a variety of terrain and focusing on body positioning and weight distribution. And for endurance training, a structured plan that includes both long rides and high-intensity intervals will help you build the stamina you need for racing.
But where's the fun in that, right?