When you say you had trouble starting what do you actually mean? Is your machine a Raven I or a Raven II. For the Raven II SL42 was released in May of this year which is a kit which helps improve starting.
If the battery was low then a high amp reading after start up would be normal and should reduce after about 10 mins.
On the 24 volt ships the maximum continuous allowed current is 64 amps.