Hi all, new member to the forum. I recently purchased a home owner california trimmer used off of craigslist. I know very little about these mowers but became interested since acquiring a house with bent grass and previous owner used a caltrimmer to mow. The trimmer I bought does not appear to have a bed knife installed but does cut the grass granted does not seem to cut real even following first mow. From picture attached can anyone confirm this is missing a bed knife and if so a rough estimate to purchase and have installed. Is this a DIY project? Thanks and I apologize in advance I know very little about these mowers.