Few days ago Twitter Bootstrap 3 RC1 released and i just started to play with it on a personal project.

I have a horizontal form which includes some inline radio-checkbox groups but horizontal alignment of these elements are not equal:

enter image description here

Question 1: Why chrome doesn't displays help-block element on the same line with the label?

Question 2: How to align inline radio group on the same line with label?

Question 3: Is following markup valid? Are these problems related with the markup?

Markup:

<div class="container">
  <form class="form-horizontal">

  <div class="form-group">
    <label class="col-lg-2 control-label">Weight</label>
    <div class="col-lg-1">
      <input type="text" name="weight" class="form-control" value="20">
    </div>
    <div class="help-block"> grams</div>  
  </div>

  <div class="form-group">
    <label class="col-lg-2 control-label">Full part name</label>
    <div class="col-lg-6">
      <input type="text" name="name" class="form-control" placeholder="Don't use numeric characters..">
    </div>
  </div>

  <div class="form-group">
    <label class="col-lg-2 control-label">Inline radios</label>
    <div class="col-lg-10">
      <label class="radio-inline">
        <input type="radio" name="radio"> Hello
      </label>
      <label class="radio-inline">
        <input type="radio" name="radio"> Other
      </label>
      <label class="radio-inline">
        <input type="radio" name="radio"> Another
      </label>
      <label class="radio-inline">
        <input type="radio" name="radio" checked="checked"> Foobar
      <
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