I have a 2020 Pioneer 700-4 with a starting, likely electrical, problem that the dealer hasn't been able fix. I have A Honda Repair Manual 2014 and am wondering how much the builds may have changed since 2014 I have seen that the new manuals (OEM 61HL307) are labeled 2014-2021. Should I invest in the newer version? Anyone know where I can get the newer version at a reasonable cost if needed?