I am in the process of putting my tool kit together for an upcoming multi-year trip (starting with South America and hopefully turning into a RTW). Being that we are traveling on 250s, I am trying to keep the weight down and being critical of everything we bring. One item I keep going back and forth on is a chain tool (breaker and press/riveter). I have never taken one on a trip before, but up until now my longest trip has been one month - 10k miles. Is it a must have, strongly recommended, or leave it at home? Also, any recommendations on light weight tools that can handle her 428 chain and my 520, most I have seen (like the Motion Pro) only work of 5xx chains? Thanks in advance for any feedback.