If i cain it from the lights it'll give some resistance from 1st to 2nd but i'm not worried, as my e46 (1999) used to be a lot worse than that especially when cold. When driving normally it shifts in ok so i'd probably contribute a lot of it to stress from the power of the 3.4litre lump when shifting at speed. After reading this though i'll prob change the gearbox oil in the summer holidays - see what happens. Don't like the sound of changing that 'guibo' though. Looks tricky.